1
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Ibrahim D, Byrns J, Maziarz E, Alexander BD, Saullo JL. Use of Letermovir for Primary and Secondary Cytomegalovirus Prophylaxis in Abdominal Organ Transplantation: A Single Center Experience. J Pharm Pract 2024; 37:770-779. [PMID: 37280011 DOI: 10.1177/08971900231176430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Background: Cytomegalovirus (CMV) infection after abdominal organ transplantation is associated with increased morbidity and mortality. The use of valganciclovir for CMV prophylaxis is limited by drug-induced myelosuppression and potential emergence of resistance. Letermovir is approved for primary CMV prophylaxis in CMV seropositive allogeneic hematopoietic cell transplant recipients. However, it is increasingly used off-label for prophylaxis in solid organ transplant (SOT) recipients. Methods: Based on pharmacy records, we examined retrospectively the use of letermovir for CMV prophylaxis in abdominal transplant recipients initiated on therapy at our center from January 1, 2018 through October 15, 2020. Data were summarized using descriptive statistics. Results: Twelve episodes of letermovir prophylaxis occurred in ten patients. Four patients received primary and 6 patients received secondary prophylaxis during the study period, with 1 patient receiving letermovir secondary prophylaxis on 3 separate occasions. All patients receiving letermovir for primary prophylaxis had successful outcomes. However, letermovir secondary prophylaxis was unsuccessful in 5 of the 8 episodes (62.5%) due to breakthrough CMV DNAemia and/or disease. Only 1 patient discontinued therapy due to adverse effects. Conclusion: Although letermovir was generally well tolerated, the high rate of failure when used as secondary prophylaxis was noteworthy. Additional controlled clinical trials assessing the safety and efficacy of letermovir prophylaxis in SOT recipients are warranted.
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Affiliation(s)
- Dima Ibrahim
- Division of Infectious Diseases, Burjeel Medical City, Abu Dhabi, UAE
- Duke University Medical Center, Durham, NC, USA
| | - Jennifer Byrns
- Department of Pharmacy, Duke University Medical Center, Durham, NC, USA
| | - Eileen Maziarz
- Division of Infectious Diseases, Duke University Medical Center, Durham, NC, USA
| | - Barbara D Alexander
- Division of Infectious Diseases, Duke University Medical Center, Durham, NC, USA
| | - Jennifer L Saullo
- Division of Infectious Diseases, Duke University Medical Center, Durham, NC, USA
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2
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Stewart AG, Kotton CN. What's New: Updates on Cytomegalovirus in Solid Organ Transplantation. Transplantation 2024; 108:884-897. [PMID: 37899366 DOI: 10.1097/tp.0000000000004855] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2023]
Abstract
Cytomegalovirus (CMV) is one of the most common infections occurring after solid organ transplantation. This high burden of disease, which incurs sizeable morbidity, may be worsening with the proportion of high-risk D+/R- solid organ transplantation recipients increasing in some regions globally. Cohort studies continue to support either universal prophylaxis or preemptive therapy as effective prevention strategies. Letermovir prophylaxis was noninferior to valganciclovir in adult high-risk D+/R- kidney transplant recipients with fewer drug-related adverse events in a recent clinical trial and has now been approved for such use in some regions. Maribavir preemptive therapy failed to demonstrate noninferiority when compared with valganciclovir in hematopoietic stem cell transplant recipients but looked promising for safety. Donor matching could be useful in prevention CMV disease with a survival advantage demonstrated in seronegative recipients waiting up to 30 mo for a seronegative kidney. Immune-guided prophylaxis resulted in fewer CMV infection episodes in lung transplant recipients when compared with fixed-duration prophylaxis in a recent clinical trial. For treatment of refractory or resistant CMV infection, maribavir was more efficacious and better tolerated when compared with investigator-initiated therapy in its registration trial for this condition. Further research regarding best treatment and prophylaxis of resistant or refractory CMV infection is needed to reflect best clinical practice choices. Optimal use of immune globulin or CMV-specific T cells for prevention or treatment of CMV disease remains undefined. Standardized definitions for the design of CMV clinical trials have been developed. In this review, we highlight recent updates in the field from data published since 2018.
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Affiliation(s)
- Adam G Stewart
- Centre for Clinical Research, Faculty of Medicine, University of Queensland, Royal Brisbane and Women's Hospital Campus, Brisbane, QLD, Australia
| | - Camille N Kotton
- Transplant and Immunocompromised Host Infectious Diseases, Infectious Diseases Division, Massachusetts General Hospital, Harvard Medical School, Boston, MA
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3
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Hardinger KL, Brennan DC. Cytomegalovirus Treatment in Solid Organ Transplantation: An Update on Current Approaches. Ann Pharmacother 2024:10600280241237534. [PMID: 38501850 DOI: 10.1177/10600280241237534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/20/2024] Open
Abstract
OBJECTIVE The article reviews the safety and efficacy of treatments for cytomegalovirus (CMV) in solid organ transplantation. DATA SOURCES A literature review was conducted in PubMed, MEDLINE, and Clinicaltrials.gov from database inception through January 2024, using terms CMV, therapy, and solid organ transplantation. STUDY SELECTION AND DATA EXTRACTION Clinical trials, meta-analyses, cohort studies, case reports, and guidelines were included. Letters to the editor, reviews, and commentaries were excluded. DATA SYNTHESIS After abstract screening and full-text review of 728 citations for eligibility, 53 were included. Valganciclovir and intravenous ganciclovir are drugs of choice for CMV management and, until recently, the availability of alternative options has been restricted due to toxicity. For instance, foscarnet and cidofovir serve as second-line agents due to potential bone marrow and renal toxicity. In patients with refractory or resistant CMV, maribavir, a novel oral agent, has proven efficacy and a lower adverse effect profile. However, in refractory or resistant CMV, foscarnet and cidofovir are preferred in invasive disease (CMV gastritis, CMV retinitis, and CMV encephalitis), high viral loads, and inability to tolerate oral preparations. RELEVANCE TO PATIENT CARE AND CLINICAL PRACTICE Consensus guidelines have not been revised since approval of novel antivirals in solid organ transplantation. Valganciclovir and ganciclovir remain drugs of choice for initial CMV therapy. Foscarnet, cidofovir, and maribavir are treatments for refractory or resistant-CMV. CONCLUSIONS Selection of CMV antiviral treatment should be determined by patient-specific factors, including severity of illness, resistant or refractory disease, dose-limiting adverse effects, and the preferred route of administration.
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Affiliation(s)
- Karen L Hardinger
- Division of Pharmacy Practice and Administration, School of Pharmacy, University of Missouri-Kansas City, Kansas City, MO, USA
| | - Daniel C Brennan
- Johns Hopkins Comprehensive Transplant Center, Baltimore, MD, USA
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4
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Kleiboeker H, Descourouez JL, Schulz LT, Mandelbrot DA, Odorico JS, Saddler CM, Smith JA, Jorgenson MR. Resource Use and Financial Impact of Oral Step-Down Therapy for Resistant Cytomegalovirus in Solid Organ Transplant Recipients. Transplant Proc 2024; 56:434-439. [PMID: 38355369 DOI: 10.1016/j.transproceed.2024.01.052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2023] [Accepted: 01/16/2024] [Indexed: 02/16/2024]
Abstract
BACKGROUND Cytomegalovirus (CMV) infections are common opportunistic infections in solid organ transplants (SOT) with increased health care resource USE and costs. Costs are further increased with ganciclovir-resistance (GR). This study aimed to evaluate the real-world impact of conversion to oral step-down therapy on duration of foscarnet and hospital length of stay (LOS) for treatment of GR-CMV infections in SOT. METHODS This study included adult recipients of kidney or lung transplants who received foscarnet for genotypically documented GR-CMV while admitted at the University of Wisconsin Hospital from October 1, 2015, to January 31, 2022. Patients in the oral step-down group were converted from standard of care (SOC; foscarnet) to maribavir or letermovir; patients in the historical control group were treated with SOC. RESULTS Twenty-six patients met the inclusion criteria: 5 in the intervention group and 21 in the SOC group. The median viral load at foscarnet initiation was 11,435 IU/mL. Patients who received oral step-down conversion had shorter mean foscarnet duration than those who received SOC (7 ± 4 vs 37 ± 25 days, P = .017). Mean hospital LOS in the oral step-down group (16 ± 3 days) was shorter than the SOC group (33 ± 21 days; P < .001). In the SOC group, 9 patients lost their graft, and 9 patients died; 2 deaths were attributed to CMV. There were 2 deaths in the oral step-down group, neither of which was attributed to CMV. CONCLUSION AND RELEVANCE In this real-world case series of patients receiving treatment for GR-CMV infection, oral step-down conversion decreased foscarnet therapy duration and hospital LOS. Future studies are needed to evaluate better the effect of oral step-down in treating GR-CMV infection on treatment duration and cost-savings.
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Affiliation(s)
- Hanna Kleiboeker
- Department of Pharmacy, University of Wisconsin Hospital and Clinics, Madison, Wisconsin.
| | - Jillian L Descourouez
- Department of Pharmacy, University of Wisconsin Hospital and Clinics, Madison, Wisconsin
| | - Lucas T Schulz
- Department of Pharmacy, University of Wisconsin Hospital and Clinics, Madison, Wisconsin
| | - Didier A Mandelbrot
- Department of Medicine, Division of Nephrology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Jon S Odorico
- Department of Surgery, Division of Transplantation, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Christopher M Saddler
- Department of Medicine, Division of Infectious Diseases, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Jeannina A Smith
- Department of Medicine, Division of Infectious Diseases, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Margaret R Jorgenson
- Department of Pharmacy, University of Wisconsin Hospital and Clinics, Madison, Wisconsin
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5
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Valencia Deray KG, Danziger-Isakov LA, Downes KJ. Current and Emerging Antiviral Agents in the Prevention and Treatment of Cytomegalovirus in Pediatric Transplant Recipients. J Pediatric Infect Dis Soc 2024; 13:S14-S21. [PMID: 38417084 PMCID: PMC10901473 DOI: 10.1093/jpids/piad059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Accepted: 08/16/2023] [Indexed: 03/01/2024]
Abstract
Despite current prophylaxis regimens, cytomegalovirus (CMV) is common in hematopoietic cell transplantation (HCT) and solid organ transplantation (SOT) and remains a significant cause of morbidity and mortality. Newer antiviral medications are reshaping the landscape for prevention and treatment of CMV DNAemia, infection, and disease. Letermovir is approved for CMV prevention in adult HCT patients and is attractive due to the absence of marrow suppression seen with ganciclovir/valganciclovir. Letermovir should not be routinely used for CMV treatment due to its low threshold for resistance. Maribavir is approved for the treatment of refractory or resistant CMV disease in HCT and SOT recipients ≥12 years of age, though it has no current role in CMV prevention. More research is needed to fully elucidate the roles, efficacy, and safety of these newer agents in prevention and treatment of CMV in pediatric transplant recipients.
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Affiliation(s)
- Kristen G Valencia Deray
- Department of Pediatrics, Division of Infectious Diseases, Baylor College of Medicine, Houston, Texas, USA
| | - Lara A Danziger-Isakov
- Division of Infectious Disease, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, USA
- Department of Pediatrics, University of Cincinnati, Cincinnati, Ohio, USA
| | - Kevin J Downes
- Division of Infectious Diseases, Children’s Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
- Department of Pediatrics, Perelman School of Medicine of the University of Pennsylvania, Philadelphia, Pennsylvania, USA
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6
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Kotton CN, Torre-Cisneros J, Yakoub-Agha I. Slaying the "Troll of Transplantation"-new frontiers in cytomegalovirus management: A report from the CMV International Symposium 2023. Transpl Infect Dis 2024; 26:e14183. [PMID: 37942955 DOI: 10.1111/tid.14183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Accepted: 10/15/2023] [Indexed: 11/10/2023]
Abstract
The 2023 International CMV Symposium took place in Barcelona in May 2023. During the 2-day meeting, delegates and faculty discussed the ongoing challenge of managing the risk of cytomegalovirus infection (the Troll of Transplantation) after solid organ or hematopoietic cell transplantation. Opportunities to improve outcomes of transplant recipients by applying advances in antiviral prophylaxis or pre-emptive therapy, immunotherapy, and monitoring of cell-mediated immunity to routine clinical practice were debated and relevant educational clinical cases presented. This review summarizes the presentations, cases, and discussions from the meeting and describes how further advances are needed before the Troll of Transplantation is slain.
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Affiliation(s)
- Camille N Kotton
- Transplant and Immunocompromised Host Infectious Diseases, Infectious Diseases Division, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Julian Torre-Cisneros
- Maimónides Institute for Biomedical Research of Cordoba (IMIBIC)/Reina Sofía University Hospital/University of Cordoba (UCO), Cordoba, Spain
- CIBERINFEC, ISCIII - CIBER de Enfermedades Infecciosas, Instituto de Salud Carlos III, Madrid, Spain
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7
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von Hoerschelmann E, Münch J, Gao L, Lücht C, Naik MG, Schmidt D, Pitzinger P, Michel D, Avaniadi P, Schrezenmeier E, Choi M, Halleck F, Budde K. Letermovir Rescue Therapy in Kidney Transplant Recipients with Refractory/Resistant CMV Disease. J Clin Med 2023; 13:100. [PMID: 38202107 PMCID: PMC10780128 DOI: 10.3390/jcm13010100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 12/12/2023] [Accepted: 12/20/2023] [Indexed: 01/12/2024] Open
Abstract
(1) Background: CMV infections remain a problem after kidney transplantation, particularly if patients are refractory or resistant (r/r) to treatment with valganciclovir (VGCV) or ganciclovir (GCV). (2) Methods: In a single-center retrospective study, kidney transplant recipients (KTR) receiving letermovir (LTV) as rescue therapy for VGCV-/GCV-r/r CMV disease were analyzed regarding CMV history, immunosuppression, and outcomes. (3) Results: Of 201 KTR treated for CMV between 2017 and 2022, 8 patients received LTV following treatment failure with VGCV/GCV. All patients received CMV prophylaxis with VGCV according to the center's protocol, and 7/8 patients had a high-risk (D+/R-) CMV constellation. In seven of eight cases, rising CMV levels occurred during prophylaxis. In seven of eight patients, a mutation in UL97 associated with a decreased response to VGCV/GCV was detected. In four of eight patients, LTV resulted in CMV clearance after 24 ± 10 weeks (16-39 weeks), two of eight patients stabilized at viral loads <2000 cop/mL (6-20 weeks), and two of eight patients developed LTV resistance (range 8-10 weeks). (4) Conclusion: LTV, which is currently evaluated for CMV prophylaxis in kidney transplantation, also shows promising results for the treatment of patients with VGCV/GCV resistance despite the risk of developing LTV resistance. Additional studies are needed to further define its role in the treatment of patients with CMV resistance.
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Affiliation(s)
- Ellen von Hoerschelmann
- Department of Nephrology and Medical Intensive Care, Charité Universitätsmedizin Berlin, 10117 Berlin, Germany
| | - Johannes Münch
- Department of Nephrology and Medical Intensive Care, Charité Universitätsmedizin Berlin, 10117 Berlin, Germany
| | - Linde Gao
- Department of Nephrology and Medical Intensive Care, Charité Universitätsmedizin Berlin, 10117 Berlin, Germany
| | - Christian Lücht
- Department of Nephrology and Medical Intensive Care, Charité Universitätsmedizin Berlin, 10117 Berlin, Germany
| | - Marcel G. Naik
- Department of Nephrology and Medical Intensive Care, Charité Universitätsmedizin Berlin, 10117 Berlin, Germany
| | - Danilo Schmidt
- Department of Nephrology and Medical Intensive Care, Charité Universitätsmedizin Berlin, 10117 Berlin, Germany
| | - Paul Pitzinger
- Institute of Virology, Charité Universitätsmedizin Berlin, Labor Berlin-Charité-Vivantes GmbH, 10117 Berlin, Germany
| | - Detlef Michel
- Institute of Virology, Universitätsklinikum Ulm, 89081 Ulm, Germany
| | - Parthenopi Avaniadi
- Department of Nephrology and Medical Intensive Care, Charité Universitätsmedizin Berlin, 10117 Berlin, Germany
| | - Eva Schrezenmeier
- Department of Nephrology and Medical Intensive Care, Charité Universitätsmedizin Berlin, 10117 Berlin, Germany
| | - Mira Choi
- Department of Nephrology and Medical Intensive Care, Charité Universitätsmedizin Berlin, 10117 Berlin, Germany
| | - Fabian Halleck
- Department of Nephrology and Medical Intensive Care, Charité Universitätsmedizin Berlin, 10117 Berlin, Germany
| | - Klemens Budde
- Department of Nephrology and Medical Intensive Care, Charité Universitätsmedizin Berlin, 10117 Berlin, Germany
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8
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Pérez AB, Santos Bravo M, Vidal-Verdú E, Páez-Vega A, Vaquero-Barrios JM, Montero JL, Marcos MÁ, Torre-Cisneros J. Real-life experience in two cases of secondary prophylaxis with letermovir for CMV infection in solid organ transplantation. Microbiol Spectr 2023; 11:e0163023. [PMID: 37902387 PMCID: PMC10714737 DOI: 10.1128/spectrum.01630-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Accepted: 09/26/2023] [Indexed: 10/31/2023] Open
Abstract
IMPORTANCE This observation provides comprehensive data on the clinical correlates of both cytomegalovirus (CMV) genotypic follow-up and clinical monitoring and outcomes for two different solid organ transplantation recipients that received letermovir as secondary prophylaxis. Our study emphasizes that monitoring of CMV disease in the patient and early genotypic detection of resistance mutations are essential when using new antiviral drugs for off-label indication in patients experiencing CMV relapses or not responding to standard antiviral therapy. These cases and the bibliography reviewed can be helpful for other researchers and clinicians working in the field to optimize the use of new treatments for transplant recipients since drug-resistant CMV infection is an important emerging problem even with new developments in antiviral treatment.
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Affiliation(s)
- Ana-Belén Pérez
- Microbiology Service, Reina Sofia University Hospital, Cordoba, Spain
- Maimónides Institute for Biomedical Research (IMIBIC), Cordoba, Spain
- Centre of Biomedical Research for Infectious Diseases (CIBERINFEC), Institute of Health Carlos III, Madrid, Spain
| | - Marta Santos Bravo
- Centre of Biomedical Research for Infectious Diseases (CIBERINFEC), Institute of Health Carlos III, Madrid, Spain
- Microbiology Service, Hospital Clínic, Barcelona, Spain
| | - Elisa Vidal-Verdú
- Centre of Biomedical Research for Infectious Diseases (CIBERINFEC), Institute of Health Carlos III, Madrid, Spain
- Infectious Diseases Service, Reina Sofia University Hospital, Cordoba, Spain
- Maimónides Institute for Biomedical Research (IMIBIC), Cordoba, Spain
- Departament of Medicine (Medicine, Dermatology and Otorhinolaryngology), University of Cordoba, Spain
| | - Aurora Páez-Vega
- Centre of Biomedical Research for Infectious Diseases (CIBERINFEC), Institute of Health Carlos III, Madrid, Spain
- Maimónides Institute for Biomedical Research (IMIBIC), Cordoba, Spain
| | - José-Manuel Vaquero-Barrios
- Maimónides Institute for Biomedical Research (IMIBIC), Cordoba, Spain
- Lung Transplantation Section, Reina Sofia University Hospital, Cordoba, Spain
| | - José-Luis Montero
- Maimónides Institute for Biomedical Research (IMIBIC), Cordoba, Spain
- Liver Transplantation Section, Reina Sofia University Hospital, Cordoba, Spain
| | - María-Ángeles Marcos
- Centre of Biomedical Research for Infectious Diseases (CIBERINFEC), Institute of Health Carlos III, Madrid, Spain
- Microbiology Service, Hospital Clínic, Barcelona, Spain
| | - Julián Torre-Cisneros
- Maimónides Institute for Biomedical Research (IMIBIC), Cordoba, Spain
- Centre of Biomedical Research for Infectious Diseases (CIBERINFEC), Institute of Health Carlos III, Madrid, Spain
- Infectious Diseases Service, Reina Sofia University Hospital, Cordoba, Spain
- Departament of Medicine (Medicine, Dermatology and Otorhinolaryngology), University of Cordoba, Spain
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9
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Zehner M, Alt M, Ashurov A, Goldsmith JA, Spies R, Weiler N, Lerma J, Gieselmann L, Stöhr D, Gruell H, Schultz EP, Kreer C, Schlachter L, Janicki H, Laib Sampaio K, Stegmann C, Nemetchek MD, Dähling S, Ullrich L, Dittmer U, Witzke O, Koch M, Ryckman BJ, Lotfi R, McLellan JS, Krawczyk A, Sinzger C, Klein F. Single-cell analysis of memory B cells from top neutralizers reveals multiple sites of vulnerability within HCMV Trimer and Pentamer. Immunity 2023; 56:2602-2620.e10. [PMID: 37967532 DOI: 10.1016/j.immuni.2023.10.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Revised: 07/02/2023] [Accepted: 10/18/2023] [Indexed: 11/17/2023]
Abstract
Human cytomegalovirus (HCMV) can cause severe diseases in fetuses, newborns, and immunocompromised individuals. Currently, no vaccines are approved, and treatment options are limited. Here, we analyzed the human B cell response of four HCMV top neutralizers from a cohort of 9,000 individuals. By single-cell analyses of memory B cells targeting the pentameric and trimeric HCMV surface complexes, we identified vulnerable sites on the shared gH/gL subunits as well as complex-specific subunits UL128/130/131A and gO. Using high-resolution cryogenic electron microscopy, we revealed the structural basis of the neutralization mechanisms of antibodies targeting various binding sites. Moreover, we identified highly potent antibodies that neutralized a broad spectrum of HCMV strains, including primary clinical isolates, that outperform known antibodies used in clinical trials. Our study provides a deep understanding of the mechanisms of HCMV neutralization and identifies promising antibody candidates to prevent and treat HCMV infection.
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Affiliation(s)
- Matthias Zehner
- Laboratory of Experimental Immunology, Institute of Virology, Faculty of Medicine and University Hospital Cologne, University of Cologne, 50931 Cologne, Germany.
| | - Mira Alt
- Department of Infectious Diseases, West German Centre of Infectious Diseases, University Hospital Essen, University Duisburg-Essen, 45147 Essen, Germany
| | - Artem Ashurov
- Laboratory of Experimental Immunology, Institute of Virology, Faculty of Medicine and University Hospital Cologne, University of Cologne, 50931 Cologne, Germany
| | - Jory A Goldsmith
- Department of Molecular Biosciences, The University of Texas at Austin, Austin, TX 78712, USA
| | - Rebecca Spies
- Institute for Virology, Ulm University Medical Center, 89081 Ulm, Germany
| | - Nina Weiler
- Institute for Virology, Ulm University Medical Center, 89081 Ulm, Germany
| | - Justin Lerma
- Department of Molecular Biosciences, The University of Texas at Austin, Austin, TX 78712, USA
| | - Lutz Gieselmann
- Laboratory of Experimental Immunology, Institute of Virology, Faculty of Medicine and University Hospital Cologne, University of Cologne, 50931 Cologne, Germany; German Center for Infection Research, Partner Site Bonn-Cologne, 50931 Cologne, Germany
| | - Dagmar Stöhr
- Institute for Virology, Ulm University Medical Center, 89081 Ulm, Germany
| | - Henning Gruell
- Laboratory of Experimental Immunology, Institute of Virology, Faculty of Medicine and University Hospital Cologne, University of Cologne, 50931 Cologne, Germany
| | - Eric P Schultz
- Division of Biological Sciences, University of Montana, Missoula, MT 59812, USA; Center for Biomolecular Structure and Dynamics, University of Montana, Missoula, MT 59812, USA
| | - Christoph Kreer
- Laboratory of Experimental Immunology, Institute of Virology, Faculty of Medicine and University Hospital Cologne, University of Cologne, 50931 Cologne, Germany
| | - Linda Schlachter
- Laboratory of Experimental Immunology, Institute of Virology, Faculty of Medicine and University Hospital Cologne, University of Cologne, 50931 Cologne, Germany
| | - Hanna Janicki
- Laboratory of Experimental Immunology, Institute of Virology, Faculty of Medicine and University Hospital Cologne, University of Cologne, 50931 Cologne, Germany
| | | | - Cora Stegmann
- Division of Biological Sciences, University of Montana, Missoula, MT 59812, USA; Center for Biomolecular Structure and Dynamics, University of Montana, Missoula, MT 59812, USA
| | - Michelle D Nemetchek
- Division of Biological Sciences, University of Montana, Missoula, MT 59812, USA; Center for Biomolecular Structure and Dynamics, University of Montana, Missoula, MT 59812, USA
| | - Sabrina Dähling
- Laboratory of Experimental Immunology, Institute of Virology, Faculty of Medicine and University Hospital Cologne, University of Cologne, 50931 Cologne, Germany
| | - Leon Ullrich
- Laboratory of Experimental Immunology, Institute of Virology, Faculty of Medicine and University Hospital Cologne, University of Cologne, 50931 Cologne, Germany
| | - Ulf Dittmer
- Institute for Virology, University Hospital Essen, University of Duisburg-Essen, 45147 Essen, Germany
| | - Oliver Witzke
- Department of Infectious Diseases, West German Centre of Infectious Diseases, University Hospital Essen, University Duisburg-Essen, 45147 Essen, Germany
| | - Manuel Koch
- Institute for Dental Research and Oral Musculoskeletal Biology, Center for Biochemistry, Faculty of Medicine and University Hospital Cologne, University of Cologne, 50931 Cologne, Germany
| | - Brent J Ryckman
- Division of Biological Sciences, University of Montana, Missoula, MT 59812, USA; Center for Biomolecular Structure and Dynamics, University of Montana, Missoula, MT 59812, USA
| | - Ramin Lotfi
- Institute for Transfusion Medicine, Ulm University Medical Center, 89081 Ulm, Germany
| | - Jason S McLellan
- Department of Molecular Biosciences, The University of Texas at Austin, Austin, TX 78712, USA
| | - Adalbert Krawczyk
- Department of Infectious Diseases, West German Centre of Infectious Diseases, University Hospital Essen, University Duisburg-Essen, 45147 Essen, Germany; Institute for Virology, University Hospital Essen, University of Duisburg-Essen, 45147 Essen, Germany
| | - Christian Sinzger
- Institute for Virology, Ulm University Medical Center, 89081 Ulm, Germany
| | - Florian Klein
- Laboratory of Experimental Immunology, Institute of Virology, Faculty of Medicine and University Hospital Cologne, University of Cologne, 50931 Cologne, Germany; German Center for Infection Research, Partner Site Bonn-Cologne, 50931 Cologne, Germany; Center for Molecular Medicine Cologne (CMMC), University Hospital of Cologne, 50931 Cologne, Germany.
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10
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Abstract
Despite advances in monitoring and treatment, cytomegalovirus (CMV) infections remain one of the most common complications after solid organ transplantation (SOT). CMV infection may fail to respond to standard first- and second-line antiviral therapies with or without the presence of antiviral resistance to these therapies. This failure to respond after 14 days of appropriate treatment is referred to as "resistant/refractory CMV." Limited data on refractory CMV without antiviral resistance are available. Reported rates of resistant CMV are up to 18% in SOT recipients treated for CMV. Therapeutic options for treating these infections are limited due to the toxicity of the agent used or transplant-related complications. This is often the challenge with conventional agents such as ganciclovir, foscarnet and cidofovir. Recent introduction of new CMV agents including maribavir and letermovir as well as the use of adoptive T cell therapy may improve the outcome of these difficult-to-treat infections in SOT recipients. In this expert review, we focus on new treatment options for resistant/refractory CMV infection and disease in SOT recipients, with an emphasis on maribavir, letermovir, and adoptive T cell therapy.
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Affiliation(s)
- Carla Simone Walti
- Division of Infectious Diseases and Hospital Epidemiology, Departments of Biomedicine and Clinical Research, University and University Hospital of Basel, Basel, Switzerland
| | - Nina Khanna
- Division of Infectious Diseases and Hospital Epidemiology, Departments of Biomedicine and Clinical Research, University and University Hospital of Basel, Basel, Switzerland
| | - Robin K. Avery
- Division of Infectious Diseases, Department of Medicine, Johns Hopkins University, Baltimore, MD, United States
| | - Ilkka Helanterä
- Department of Transplantation and Liver Surgery, Helsinki University Hospital and University of Helsinki, Helsinki, Finland
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Bottino P, Pastrone L, Curtoni A, Bondi A, Sidoti F, Zanotto E, Cavallo R, Solidoro P, Costa C. Antiviral Approach to Cytomegalovirus Infection: An Overview of Conventional and Novel Strategies. Microorganisms 2023; 11:2372. [PMID: 37894030 PMCID: PMC10608897 DOI: 10.3390/microorganisms11102372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 09/16/2023] [Accepted: 09/20/2023] [Indexed: 10/29/2023] Open
Abstract
Human cytomegalovirus (HCMV) is a herpesvirus capable of establishing a lifelong persistence in the host through a chronic state of infection and remains an essential global concern due to its distinct life cycle, mutations, and latency. It represents a life-threatening pathogen for immunocompromised patients, such as solid organ transplanted patients, HIV-positive individuals, and hematopoietic stem cell recipients. Multiple antiviral approaches are currently available and administered in order to prevent or manage viral infections in the early stages. However, limitations due to side effects and the onset of antidrug resistance are a hurdle to their efficacy, especially for long-term therapies. Novel antiviral molecules, together with innovative approaches (e.g., genetic editing and RNA interference) are currently in study, with promising results performed in vitro and in vivo. Since HCMV is a virus able to establish latent infection, with a consequential risk of reactivation, infection management could benefit from preventive treatment for critical patients, such as immunocompromised individuals and seronegative pregnant women. This review will provide an overview of conventional antiviral clinical approaches and their mechanisms of action. Additionally, an overview of proposed and developing new molecules is provided, including nucleic-acid-based therapies and immune-mediated approaches.
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Affiliation(s)
- Paolo Bottino
- Microbiology and Virology Unit, A.O.U. “Città della Salute e della Scienza di Torino”, 10126 Turin, Italy; (L.P.); (A.C.); (A.B.); (F.S.); (E.Z.); (R.C.)
| | - Lisa Pastrone
- Microbiology and Virology Unit, A.O.U. “Città della Salute e della Scienza di Torino”, 10126 Turin, Italy; (L.P.); (A.C.); (A.B.); (F.S.); (E.Z.); (R.C.)
| | - Antonio Curtoni
- Microbiology and Virology Unit, A.O.U. “Città della Salute e della Scienza di Torino”, 10126 Turin, Italy; (L.P.); (A.C.); (A.B.); (F.S.); (E.Z.); (R.C.)
| | - Alessandro Bondi
- Microbiology and Virology Unit, A.O.U. “Città della Salute e della Scienza di Torino”, 10126 Turin, Italy; (L.P.); (A.C.); (A.B.); (F.S.); (E.Z.); (R.C.)
| | - Francesca Sidoti
- Microbiology and Virology Unit, A.O.U. “Città della Salute e della Scienza di Torino”, 10126 Turin, Italy; (L.P.); (A.C.); (A.B.); (F.S.); (E.Z.); (R.C.)
| | - Elisa Zanotto
- Microbiology and Virology Unit, A.O.U. “Città della Salute e della Scienza di Torino”, 10126 Turin, Italy; (L.P.); (A.C.); (A.B.); (F.S.); (E.Z.); (R.C.)
| | - Rossana Cavallo
- Microbiology and Virology Unit, A.O.U. “Città della Salute e della Scienza di Torino”, 10126 Turin, Italy; (L.P.); (A.C.); (A.B.); (F.S.); (E.Z.); (R.C.)
| | - Paolo Solidoro
- Pneumology Unit, A.O.U. “Città della Salute e della Scienza di Torino”, 10126 Turin, Italy;
| | - Cristina Costa
- Microbiology and Virology Unit, A.O.U. “Città della Salute e della Scienza di Torino”, 10126 Turin, Italy; (L.P.); (A.C.); (A.B.); (F.S.); (E.Z.); (R.C.)
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12
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Malahe SRK, van Kampen JJA, Manintveld OC, Hoek RAS, den Hoed CM, Baan CC, Kho MML, Verjans GMGM. Current Perspectives on the Management of Herpesvirus Infections in Solid Organ Transplant Recipients. Viruses 2023; 15:1595. [PMID: 37515280 PMCID: PMC10383436 DOI: 10.3390/v15071595] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Revised: 07/12/2023] [Accepted: 07/18/2023] [Indexed: 07/30/2023] Open
Abstract
Solid organ transplant recipients (SOTRs) are at high risk of human herpesvirus (HHV)-related morbidity and mortality due to the use of immunosuppressive therapy. We aim to increase awareness and understanding of HHV disease burden in SOTRs by providing an overview of current prevention and management strategies as described in the literature and guidelines. We discuss challenges in both prevention and treatment as well as future perspectives.
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Affiliation(s)
- S Reshwan K Malahe
- Department of Internal Medicine, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands
- Erasmus MC Transplant Institute, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands
| | - Jeroen J A van Kampen
- Department of Viroscience, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands
| | - Olivier C Manintveld
- Erasmus MC Transplant Institute, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands
- Department of Cardiology, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands
| | - Rogier A S Hoek
- Erasmus MC Transplant Institute, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands
- Department of Pulmonary Medicine, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands
| | - Caroline M den Hoed
- Erasmus MC Transplant Institute, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands
- Department of Gastroenterology and Hepatology, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands
| | - Carla C Baan
- Department of Internal Medicine, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands
- Erasmus MC Transplant Institute, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands
| | - Marcia M L Kho
- Department of Internal Medicine, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands
- Erasmus MC Transplant Institute, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands
| | - Georges M G M Verjans
- Department of Viroscience, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands
- HerpeslabNL, Department of Viroscience, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands
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13
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Kovalishyn V, Severin O, Kachaeva M, Semenyuta I, Keith K, Harden E, Hartline C, James S, Metelytsia L, Brovarets V. Design and experimental validation of the oxazole and thiazole derivatives as potential antivirals against of human cytomegalovirus. SAR QSAR Environ Res 2023; 34:523-541. [PMID: 37424376 PMCID: PMC10529337 DOI: 10.1080/1062936x.2023.2232992] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2023] [Accepted: 06/29/2023] [Indexed: 07/11/2023]
Abstract
QSAR studies of a set of previously synthesized azole derivatives tested against human cytomegalovirus (HCMV) were performed using the OCHEM web platform. The predictive ability of the classification models has a balanced accuracy (BA) of 73-79%. The validation of the models using an external test set proved that the models can be used to predict the activity of newly designed compounds with a reasonable accuracy within the applicability domain (BA = 76-83%). The models were applied to screen a virtual chemical library with expected activity of compounds against HCMV. The five most promising new compounds were identified, synthesized and their antiviral activities against HCMV were evaluated in vitro. Two of them showed some activity against the HCMV strain AD169. According to the results of docking analysis, the most promising biotarget associated with HCMV is DNA polymerase. The docking of the most active compounds 1 and 5 in the DNA polymerase active site shows calculated binding energies of -8.6 and -7.8 kcal/mol, respectively. The ligand's complexation was stabilized by the formation of hydrogen bonds and hydrophobic interactions with amino acids Lys60, Leu43, Ile49, Pro77, Asp134, Ile135, Val136, Thr62 and Arg137.
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Affiliation(s)
- V. Kovalishyn
- V.P. Kukhar Institute of Bioorganic Chemistry and Petrochemistry, National Academy of Science of Ukraine, 1 Academician Kukhar Str., Kyiv, Ukraine
| | - O. Severin
- V.P. Kukhar Institute of Bioorganic Chemistry and Petrochemistry, National Academy of Science of Ukraine, 1 Academician Kukhar Str., Kyiv, Ukraine
| | - M. Kachaeva
- V.P. Kukhar Institute of Bioorganic Chemistry and Petrochemistry, National Academy of Science of Ukraine, 1 Academician Kukhar Str., Kyiv, Ukraine
| | - I. Semenyuta
- V.P. Kukhar Institute of Bioorganic Chemistry and Petrochemistry, National Academy of Science of Ukraine, 1 Academician Kukhar Str., Kyiv, Ukraine
| | - K.A. Keith
- Department of Pediatrics, Division of Pediatric Infectious Diseases, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - E.A. Harden
- Department of Pediatrics, Division of Pediatric Infectious Diseases, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - C.B. Hartline
- Department of Pediatrics, Division of Pediatric Infectious Diseases, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - S.H. James
- Department of Pediatrics, Division of Pediatric Infectious Diseases, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - L. Metelytsia
- V.P. Kukhar Institute of Bioorganic Chemistry and Petrochemistry, National Academy of Science of Ukraine, 1 Academician Kukhar Str., Kyiv, Ukraine
| | - V. Brovarets
- V.P. Kukhar Institute of Bioorganic Chemistry and Petrochemistry, National Academy of Science of Ukraine, 1 Academician Kukhar Str., Kyiv, Ukraine
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Tamzali Y, Pourcher V, Azoyan L, Ouali N, Barrou B, Conti F, Coutance G, Gay F, Tourret J, Boutolleau D. Factors Associated With Genotypic Resistance and Outcome Among Solid Organ Transplant Recipients With Refractory Cytomegalovirus Infection. Transpl Int 2023; 36:11295. [PMID: 37398559 PMCID: PMC10307959 DOI: 10.3389/ti.2023.11295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Accepted: 05/31/2023] [Indexed: 07/04/2023]
Abstract
Genotypically resistant cytomegalovirus (CMV) infection is associated with increased morbi-mortality. We herein aimed at understanding the factors that predict CMV genotypic resistance in refractory infections and disease in the SOTR (Solid Organ Transplant Recipients) population, and the factors associated with outcomes. We included all SOTRs who were tested for CMV genotypic resistance for CMV refractory infection/disease over ten years in two centers. Eighty-one refractory patients were included, 26 with genotypically resistant infections (32%). Twenty-four of these genotypic profiles conferred resistance to ganciclovir (GCV) and 2 to GCV and cidofovir. Twenty-three patients presented a high level of GCV resistance. We found no resistance mutation to letermovir. Age (OR = 0.94 per year, IC95 [0.089-0.99]), a history of valganciclovir (VGCV) underdosing or of low plasma concentration (OR= 5.6, IC95 [1.69-20.7]), being on VGCV at infection onset (OR = 3.11, IC95 [1.18-5.32]) and the recipients' CMV negative serostatus (OR = 3.40, IC95 [0.97-12.8]) were independently associated with CMV genotypic resistance. One year mortality was higher in the resistant CMV group (19.2 % versus 3.6 %, p = 0.02). Antiviral drugs severe adverse effects were also independently associated with CMV genotypic resistance. CMV genotypic resistance to antivirals was independently associated with a younger age, exposure to low levels of GCV, the recipients' negative serostatus, and presenting the infection on VGCV prophylaxis. This data is of importance, given that we also found a poorer outcome in the patients of the resistant group.
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Affiliation(s)
- Yanis Tamzali
- Sorbonne Université, Paris, France
- Department of Infectious and Tropical Diseases, Assistance Publique—Hôpitaux de Paris, Hôpital Pitié-Salpêtrière, Paris, France
- Assistance Publique—Hôpitaux de Paris, Hôpital Pitié-Salpêtrière, Medicosurgical Unit of Kidney Transplantation, Paris, France
- INSERM UMR 1146, Paris, France
| | - V. Pourcher
- Sorbonne Université, Paris, France
- Department of Infectious and Tropical Diseases, Assistance Publique—Hôpitaux de Paris, Hôpital Pitié-Salpêtrière, Paris, France
- Institut Pierre Louis d’Epidémiologie et de Santé Publique, INSERM UMR, Paris, France
| | - L. Azoyan
- Sorbonne Université, Paris, France
- Department of Infectious and Tropical Diseases, Assistance Publique—Hôpitaux de Paris, Hôpital Pitié-Salpêtrière, Paris, France
| | - N. Ouali
- Department of Nephrology Unité SINRA, Assistance Publique—Hôpitaux de Paris, Hôpital Tenon, Paris, France
| | - B. Barrou
- Sorbonne Université, Paris, France
- Department of Infectious and Tropical Diseases, Assistance Publique—Hôpitaux de Paris, Hôpital Pitié-Salpêtrière, Paris, France
- Assistance Publique—Hôpitaux de Paris, Hôpital Pitié-Salpêtrière, Medicosurgical Unit of Kidney Transplantation, Paris, France
- INSERM UMR 1038, Paris, France
| | - F. Conti
- Sorbonne Université, Paris, France
- Department of Hepatogastroenterlogy, Assistance Publique—Hôpitaux de Paris, Hôpital Pitié-Salpêtrière, Liver Transplantation Unit, Paris, France
| | - G. Coutance
- Sorbonne Université, Paris, France
- Department of Cardiosurgery, Assistance Publique—Hôpitaux de Paris, Hôpital Pitié-Salpêtrière, Fédération de Cardiologie, Paris, France
| | - F. Gay
- Sorbonne Université, Paris, France
- Department of Parasitology and Mycology, Assistance Publique—Hôpitaux de Paris, Hôpital Pitié-Salpêtrière, Paris, France
| | - J. Tourret
- Sorbonne Université, Paris, France
- Department of Infectious and Tropical Diseases, Assistance Publique—Hôpitaux de Paris, Hôpital Pitié-Salpêtrière, Paris, France
- Assistance Publique—Hôpitaux de Paris, Hôpital Pitié-Salpêtrière, Medicosurgical Unit of Kidney Transplantation, Paris, France
- INSERM UMR 1146, Paris, France
| | - D. Boutolleau
- Sorbonne Université, Paris, France
- Institut Pierre Louis d’Epidémiologie et de Santé Publique, INSERM UMR, Paris, France
- Department of Virology, Assistance Publique—Hôpitaux de Paris, Hôpital Pitié-Salpêtrière, Centre National de Référence Herpèsvirus (Laboratoire Associé), Paris, France
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15
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Abstract
Cytomegalovirus (CMV) is a common viral pathogen in the transplant population and is associated with significant morbidity and mortality. CMV prevention is paramount; however, selecting the best preventive strategy depends on many factors including donor-recipient CMV serostatus, transplant-specific risks, antiviral toxicities and cost. Novel CMV therapeutics such as letermovir (LTV) are desperately needed to optimize CMV management. Uniquely among CMV antiviral therapies, LTV inhibits the viral terminase complex in the CMV DNA synthesis pathway and disrupts viral genome packaging. Further, it lacks side effects frequently associated with other CMV antiviral therapies and evades common mechanisms of resistance. LTV is approved by the US Food and Drug Administration for CMV prevention in adult CMV-seropositive hematopoietic cell transplant recipients but is increasingly applied off-label for prophylaxis and treatment. This review summarizes important concepts of CMV management in transplantation, with a specific focus on LTV pharmacology and clinical experience to date alongside future prospects for its application.
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Affiliation(s)
- Jennifer L Saullo
- Department of Medicine, Division of Infectious Diseases, Duke University Medical Center, Durham, North Carolina 27710, USA; ,
| | - Rachel A Miller
- Department of Medicine, Division of Infectious Diseases, Duke University Medical Center, Durham, North Carolina 27710, USA; ,
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16
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Khawaja F, Spallone A, Kotton CN, Chemaly RF. Cytomegalovirus infection in transplant recipients: newly approved additions to our armamentarium. Clin Microbiol Infect 2023; 29:44-50. [PMID: 35843567 DOI: 10.1016/j.cmi.2022.07.001] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 07/01/2022] [Accepted: 07/02/2022] [Indexed: 12/27/2022]
Abstract
BACKGROUND The burden that cytomegalovirus (CMV) portends for haematopoietic and solid-organ transplant recipients cannot be understated. Valganciclovir and ganciclovir have successfully been used for prevention and treatment of CMV infections, although with serious side effects such as leucopenia and some development of resistance. Until recently, available therapies for ganciclovir-resistant CMV have significant toxicities. Although advances have been made in the field, the unmet medical needs for effective and well-tolerated therapies are significant. OBJECTIVES This review aims to summarise the current and emerging CMV antiviral drugs and discusses future perspectives in the field. SOURCES We searched for relevant articles with pertinent keywords: "Cytomegalovirus OR CMV", "Transplant" and "Antiviral". Articles published after 2019 were given preference. Articles were reviewed by the authors for relevance and impact to the subject of interest. CONTENT We outline in this review current advances in prophylaxis of CMV infection with letermovir, breakthrough CMV infections while on or after prophylaxis, the development of resistant and refractory CMV infections, and the newly approved anti-CMV agent, maribavir, in haematopoietic and solid-organ transplant recipients. IMPLICATIONS Prevention of CMV infections after transplant has improved greatly over the past few years. Despite major advancements, breakthrough CMV infections and development of refractory and resistant CMV infections remain major complications post transplantation. We highlight emerging therapeutics that tolerably and effectively prevent and treat CMV infections, especially refractory and resistant cases.
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Affiliation(s)
- Fareed Khawaja
- Department of Infectious Diseases, Infection Control and Employee Health, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Amy Spallone
- Department of Infectious Diseases, Infection Control and Employee Health, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Camille N Kotton
- Transplant Infectious Diseases, Massachusetts General Hospital, Boston, MA, USA
| | - Roy F Chemaly
- Department of Infectious Diseases, Infection Control and Employee Health, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
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Balani SS, Sadiq S, Jensen CJ, Kizilbash SJ. Prevention and management of CMV infection in pediatric solid organ transplant recipients. Front Pediatr 2023; 11:1098434. [PMID: 36891229 PMCID: PMC9986459 DOI: 10.3389/fped.2023.1098434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Accepted: 01/31/2023] [Indexed: 02/22/2023] Open
Abstract
Human cytomegalovirus (CMV) remains one of the most common opportunistic infections following solid organ transplantation in children. CMV causes morbidity and mortality through direct tissue-invasive disease and indirect immunomodulatory effects. In recent years, several new agents have emerged for the prevention and treatment of CMV disease in solid organ transplant recipients. However, pediatric data remain scarce, and many of the treatments are extrapolated from the adult literature. Controversies exist about the type and duration of prophylactic therapies and the optimal dosing of antiviral agents. This review provides an up-to-date overview of treatment modalities used to prevent and treat CMV disease in solid organ transplant (SOT) recipients.
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Affiliation(s)
- Shanthi S Balani
- Division of Nephrology, Department of Pediatrics, University of Minnesota, Minneapolis, MN, United States
| | - Sanober Sadiq
- Division of Nephrology, Department of Pediatrics, University of California, San Francisco, CA, United States
| | - Chelsey J Jensen
- Department of Solid Organ Transplant, University of Minnesota, Minneapolis, MN, United States
| | - Sarah J Kizilbash
- Division of Nephrology, Department of Pediatrics, University of Minnesota, Minneapolis, MN, United States
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Paolucci S, Campanini G, Cassaniti I, Tebaldi A, Novazzi F, Fratini A, Meini A, Girelli F, Palumbo L, Plebani A, Baldanti F. Emergence of Letermovir-resistant HCMV UL56 mutant during rescue treatment in a liver transplant recipient with ganciclovir-resistant infection HCMV: a case report. BMC Infect Dis 2021; 21:994. [PMID: 34556034 DOI: 10.1186/s12879-021-06694-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Accepted: 09/14/2021] [Indexed: 11/24/2022] Open
Abstract
Background Human Cytomegalovirus (HCMV) still represents a crucial concern in solid organ transplant recipients (SOTRs) and the use of antiviral therapy are limited by side effects and the selection of viral mutations conferring antiviral drug resistance. Case presentation Here we reported the case of an HCMV seronegative patient with common variable immunodeficiency (CVID), multiple hepatic adenomatosis, hepatopulmonary syndrome and portal hypertension who received a liver transplant from an HCMV seropositive donor. The patient was treated with Valganciclovir (vGCV) and then IV Ganciclovir (GCV) at 5 week post-transplant for uncontrolled HCMV DNAemia. However, since mutation A594V in UL97 gene conferring resistance to ganciclovir was reported, GCV therapy was interrupted. Due to the high toxicity of Foscarnet (FOS) and Cidofovir (CDV), Letermovir (LMV) monotherapy at the dosage of 480 mg per day was administered, with a gradual viral load reduction. However, a relapse of HCMV DNAemia revealed the presence of mutation C325Y in HCMV UL56 gene conferring resistance to LMV. Conclusions In conclusion, even if LMV is an effective and favorable safety molecule it might have a lower genetic barrier to resistance. A warning on the use of LMV monotherapy as rescue treatments for HCMV GCV-resistant infections in transplant recipients is warranted.
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Singha A, Burcham PK, Logan A, El Boghdadly Z, Howsare MM, Nunley DR, Lustberg ME, Keller BC. Letermovir for Cytomegalovirus Prophylaxis in Lung Transplant Patients with Valganciclovir-Induced Leukopenia. Transplantology 2021; 2:129-39. [DOI: 10.3390/transplantology2020013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Cytomegalovirus (CMV) prophylaxis with valganciclovir is the standard of practice in most transplant centers, but treatment-related leukopenia can limit valganciclovir’s use. Therefore, we evaluated letermovir, a novel antiviral agent recently approved for use in hematopoietic cell transplant patients as CMV prophylaxis, in lung transplant recipients unable to tolerate valganciclovir due to severe leukopenia. We performed a retrospective analysis of all lung transplant patients at our center who received letermovir for CMV prophylaxis between 1 December 2018 and 1 January 2020. A repeated measures mixed model was used to analyze white blood cell (WBC) trends, and descriptive statistics were used to analyze secondary endpoints, including CMV DNAemia, renal function, immunosuppression dosing, and allograft function. Seventeen patients were administered letermovir during the study period due to valganciclovir-induced leukopenia (median WBC nadir 1.1 K/uL, range <0.30–2.19 K/uL). Median WBC improvement was noted in 15 (88.2%) patients after starting letermovir. Breakthrough CMV DNAemia necessitating treatment occurred in two patients, with one of the two cases being due to patient noncompliance. CMV resistance to letermovir was detected in two patients, necessitating a change to an alternative agent in one of these patients. No major side effects were reported in any patient. Letermovir is a generally safe and effective alternative for CMV prophylaxis in lung transplant recipients unable to tolerate valganciclovir due to leukopenia.
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